Instructions for checking the sign status of iOS firmware
Checking the sign and sign status of iOS versions will help users know the latest iOS version upgrade status for their device and know which version is allowed to downgrade to avoid error status. . Here are 2 ways to check the sign status of iOS firmware that users can choose to use on their iOS device.
Method 1: Check through IPSW.ME
Step 1: Visit the link below and select the product line where you want to check the sign status of fimware.
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